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US 9,039,372 B2Granted
Wind turbine blade
AssigneeVestas Wind Systems A/S
InventorsMark Hancock, Wuh Ken Loh, Yun Chong Gabriel Chang
Life of this patent
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Abstract
The invention relates to a wind turbine blade with at least one control surface and an actuator inside the main body of the wind turbine blade for moving the control surface, wherein the actuator comprises a fluidic muscle, a controller and a pump, and wherein the fluidic muscle is adapted to change in length and width when the pressure of the fluid within the fluidic muscle is varied.
Claims25
A wind turbine blade comprising:
- a blade body,
- at least one blade control surface, and
- an actuator for moving the at least one blade control surface relative to the blade body,
- wherein the actuator comprises a fluidic muscle adapted to contract in a chordwise direction when the pressure of the fluid within the fluidic muscle increases, such that the at least one blade control surface is drawn from a first operating position into a second operating position, and
- wherein the control surface is made of a pretensioned resilient material, such that the control surface is biased to move from the second operating position to the first operating position when the fluidic muscle is relaxed.
2 more elements
Dependencies are inferred from the claim text.